Drying apparatus



Z. YAIVIAVUTU.

DRYING APPARATUS,

APPLICATION FILED Nov, 28. 191s.

1,372,51385.V Patented Mar.- 22, 1921.

Z. YAMAMOTO.

DRYING APPARATUS.-

APPLlcATloN FILED Nov.28,1919.

1,372,585 x Patented Mar. 22, 1921.

z'sHEETs-sHEET 2.

3 www/Con NuNrrsD STATES PATENT OFFICE ZENKICHI YAMAMOTO, OF TOKYO,JAPAN.

DRYING APPARATUS.

To all 'LU/wm t may concern) i Be it known that I, Zimmern YAMAMOTO, asubject of theEmperor of Japan, residing at No. l Mitoshiro-cho Nichome,Kanda,

. Tok o Ja an have invented certain new and 7 7 useful Improvements inDry'ng Apparatus, of which the following is a specification. u

This invention relates to `improvements in drying apparatus for variousmaterials of granular form, such as corn, wheat, or other granular food`materials, as well sand, volcanic ash powder or other chemical ormineral powders.` `The invention has for its object to provide a uniformheating means of comparatively simple construe# u tion,iwhich willrapidly heat theI material undergoing treatment without permittingdirect contact or intermixmg of the heatinggases and said material.

With the foregoing object outlined, `the invention consists in the novelfeaturesdescribed in connection `with the accompanying drawings, andmore particularly pointed out in the claims.

Referring to the drawings Figure l is a longitudinal sectional view ofmy apparatus, a half of the section being taken on line AB in Fig. 2 andthe other half being taken on line CD in Fig. 2; Fig. 2 is a transversesectional view taken on line EF in Fig. 1.

In the drawings, 1 is a stationary casing or heating chamber; 2 areconveying `receptacles for the material to be dried, and

are arranged in two parallel flights, each of which is composed of aseries of rectangular cross-sectioned boxes or dryingtrunks arranged inzig-zag form and connected together end to end.

Each of the receptacles is provided with mouth pieces 3 serving as inletopenings for hot air from the interior of the casing 1 and exhaustopenings for moist air from the interior of the receptacles. These mouthpieces 3 are fitted with wire net in their outer ends so that material`to be treated can not be discharged through the same. 4 is areciprocating supporting frame which carries the receptacles or dryingtrunks 2, and the reciprocating frame is supported by the casing 1through the medium of the shaft 5.

VThe shaft is fiXe'd to the supporting frame y Specification of LettersPatent. Patented B131'. 22, 1921; u Application med November 2s,` 191e..serial 110.341,315.` t

tothe reciprocating or vibrating movement for a suitable period. V6representschargair within the easing l; i l These conduits are composedof tubes ar` ranged between the two iiights of receptacles 2, and thetubes are connected at their upper ends to a discharge funnel. 9 arebai'ie plates to deflect the hot gas at the bottom part of the dryingchamber, to heat'the bottom of the heating chamber.

"In the working of the above described apparatus, the shaft 5 ismovedreciprocally by a convenient means so that the receptacles 2 arevibrated. Hot gas from an outside furnaceis supplied to the bottom partof the drying chamber to heat the air around the "drying trunks and atthe same time material to be treated is Vcharged into the successiveseries of drying trunks down- `wardly and is heated gradually. As thedrying trunks are vibrated, air inside thereof which is moistened by thesteam coming from the material treated, is discharged from the mouthpieces at one side of the drying trunks, while dry hot air is admittedto the trunks through the mouth pieces at the other side, thus therebeing an exchange of moist and dry hot air in the drying trunk, so thatthe material will be dried very rapidly.

` As the frame 4c reciprocates it will act as a pump or function as apiston for causing circulation of air through the trunks.

Thus according to this invention, the receptacles or drying trunks arearranged in two batteries within a iiXed casing, and gas from a furnaceis deected at the lower part of the heating chamber to heat the base ofthe heating chamber l. This gas then passes to the conduits arrangedbetween the two rows of receptacles so that the combustion impuritiessuch as smoke, etc. are prevented from directly contacting with thematerial under treatment. B this construction a more uniform heating isobtained. Moreover, by means of the mouth pieces 3, moist air inside thereceptacle is discharged from one side while hot air is introduced fromthe other side so that there is always comparatively dry air inside thereceptacles, whereby the drying speed oi the material to be treated isgreatly increased. A

drying trunk, the said mouth pieces serving as dischargingrmeans formoist air as well as inlets for dry hot air from and to the receptacle.f

2. A rdrying apparatus comprising an inclosing casing, a movable framemounted in said easing and carrying a zigzag chute having an inlet atits top Vand an outlet at its'bottom,'means for heating the interior ofsaid casing, andopenmgs 1n said chute to permit heated air within theeasing to enter said chute. Y

' 8. A drying apparatus comprising a heating chamber, a reciprocatingframe mounted in said chamber and supporting a zig-zag Y chute, meansfor heating the interior of said chambery. and openings provided in thechute for permitting heated air from the ing air within the casing, andopenings provided in said chute for admitting heated air to the interiorof the same when the reciprocable frame is moved in one direction andfor discharging moist air from said chutes when the reeiprocable frameis moved in the opposite direction.

5. An apparatus of the kind deined by claim 4c, having a chamber at itslower portion provided with baiiies forming a zig- Zag passage forheated air, means connecting said passage with the passage which extendsthrough said casing, and means for admitting heated air to said Zig-zagpassave.

In testimony whereof I affix my signature in the presence of twowitnesses.

ZENKICHI YAMAMOTO. [Ls] IVitnesses C. ARCILLAS, T. KANENCH.

